Fade in animations are a bit slow, and content is sparse.
I opened the page, scrolled down, and didn't see any text fade in at all since I hit the bottom of the page pretty quick. Once at the bottom the empty margin/padding is so big that I only see the home buttons on the dummy phones.
There are also quite a few scroll positions that only fade in a single line of text, but no image (yet). There are a few other positions that only show an image, the accompanied text is already out of the viewport. Given that there is so little content and so much empty space, this is not a great use of screen real estate.
PS: My browser window is around 1400*1000px on a Mac Retina screen.
https://imgur.com/a/i1hm1TQ